/* ---------------------------------------------------------------------------
 * 割り勘計算（傾斜配分つき）専用スタイル (css/warikan.css)
 * common.css → core.css → warikan.css の順で読み込む。
 * ---------------------------------------------------------------------------
 * 設計方針:
 * 会計の場で立ったまま、片手のスマートフォンで使われる道具である。
 *   ・数字は桁で揃え、金額は一目で読める大きさにする
 *   ・入力欄は指で触れる大きさを確保する
 *   ・「会計額と一致しているか」を最も目立つ位置に置く
 * ------------------------------------------------------------------------- */

.tool-intro {
  margin: 8px 0 4px;
}

.tool-intro h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.35;
  margin-bottom: 12px;
  max-width: 30ch;
  word-break: auto-phrase;
  text-wrap: balance;
}

.site-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.85;
  max-width: 68ch;
}

.wk-layout {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(300px, 420px);
  gap: 32px;
  align-items: start;
  margin-top: 24px;
}

.wk-panel {
  min-width: 0;
}

/* ===========================================================================
 * 合計金額
 * ========================================================================= */

.wk-total-field {
  margin-bottom: 8px;
}

.wk-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 6px;
}

.wk-total-wrap {
  display: flex;
  align-items: baseline;
  gap: 8px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 6px;
  max-width: 340px;
}

.wk-total-wrap:focus-within {
  border-bottom-color: var(--accent);
}

.wk-total-input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 2rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--text-color);
  outline: none;
  /* 数値入力の増減ボタンは、桁の大きい金額では誤操作のもとになる */
  appearance: textfield;
}

.wk-total-input::-webkit-outer-spin-button,
.wk-total-input::-webkit-inner-spin-button {
  appearance: none;
  margin: 0;
}

.wk-total-currency {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.wk-hint {
  margin-top: 6px;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ===========================================================================
 * 区分（参加者と傾斜）
 * ========================================================================= */

.wk-section {
  margin-top: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--border-color);
}

.wk-section-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 6px;
}

.wk-section-lead {
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0 0 16px;
  max-width: 62ch;
}

.wk-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.wk-preset-label {
  font-size: 0.76rem;
  color: var(--text-secondary);
  align-self: center;
  margin-right: 2px;
}

.wk-preset {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 5px 13px;
  font-family: inherit;
  font-size: 0.78rem;
  color: var(--text-color);
  cursor: pointer;
}

.wk-preset:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- 行の見出しと本体 ---
 * 見出しと入力欄の桁を揃えるため、同じ grid の定義を共有する。 */

.wk-row-head,
.wk-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 5.5em 6em 3.2em 2.2em;
  gap: 8px;
  align-items: center;
}

.wk-row-head {
  padding: 0 0 6px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.wk-row-head span:nth-child(2),
.wk-row-head span:nth-child(3) {
  text-align: right;
}

.wk-row-head span:nth-child(4),
.wk-row-head span:nth-child(5) {
  text-align: center;
}

.wk-row {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

.wk-cell {
  min-width: 0;
}

/*
 * 欄の見出しは通常は行の上にまとめて出しているので、ここでは隠す。
 * 見出し行が消える狭い画面でだけ現れる。
 */
.wk-inline-label {
  display: none;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 3px;
}

.wk-input-name,
.wk-input-num {
  width: 100%;
  padding: 9px 11px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--text-color);
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  appearance: none;
}

.wk-input-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  appearance: textfield;
}

.wk-input-num::-webkit-outer-spin-button,
.wk-input-num::-webkit-inner-spin-button {
  appearance: none;
  margin: 0;
}

.wk-input-name:focus,
.wk-input-num:focus {
  outline: none;
  border-color: var(--accent);
}

.wk-ratio-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.wk-ratio-wrap .wk-input-num {
  padding-right: 26px;
}

.wk-unit {
  position: absolute;
  right: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  pointer-events: none;
}

.wk-organizer {
  display: flex;
  justify-content: center;
  cursor: pointer;
}

.wk-organizer input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

.wk-remove {
  width: 100%;
  background: none;
  border: none;
  padding: 6px 0;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.wk-remove:hover:not(:disabled) {
  color: var(--danger-text);
}

.wk-remove:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.wk-add {
  margin-top: 14px;
}

/* ===========================================================================
 * 端数の扱い
 * ========================================================================= */

.wk-settings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 10px;
}

.wk-field-label {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.wk-select {
  width: 100%;
  padding: 9px 11px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text-color);
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.wk-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ===========================================================================
 * 結果
 * ========================================================================= */

.wk-result {
  position: sticky;
  top: 88px;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 24px 24px;
}

.wk-result-title {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin: 0 0 12px;
}

.wk-collected {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  margin: 0;
}

/*
 * 「会計額と一致しているか」はこの道具の答えそのもの。
 * 一致していれば静かに、ずれていれば気づける強さで示す。
 */
.wk-diff {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.wk-diff.is-exact {
  color: var(--text-secondary);
}

.wk-diff.is-over,
.wk-diff.is-under {
  color: var(--danger-text);
}

.wk-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
}

.wk-meta div {
  min-width: 0;
}

.wk-meta dt {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.wk-meta dd {
  margin: 0;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* --- 内訳 --- */

.wk-breakdown-wrap {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
  overflow-x: auto;
}

.wk-breakdown {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.wk-breakdown th,
.wk-breakdown td {
  padding: 9px 0;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}

.wk-breakdown th {
  font-weight: 600;
  padding-right: 10px;
}

.wk-row-ratio {
  display: block;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.wk-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  padding-left: 10px;
}

.wk-amount {
  display: block;
}

.wk-subtotal {
  font-weight: 700;
}

.wk-varies {
  display: block;
  font-size: 0.7rem;
  line-height: 1.6;
  color: var(--text-secondary);
  white-space: normal;
  margin-top: 3px;
}

.wk-notices {
  list-style: none;
  margin: 14px 0 0;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-color);
  font-size: 0.78rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.wk-notices li + li {
  margin-top: 4px;
}

.wk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.wk-actions .btn {
  flex: 1 1 auto;
}

/* ===========================================================================
 * レスポンシブ
 * ========================================================================= */

@media (max-width: 900px) {
  .wk-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .wk-result {
    position: static;
  }
}

@media (max-width: 560px) {
  .tool-intro h1 {
    font-size: 1.5rem;
  }
  /*
   * 狭い画面では横1列に収まらない。区分名を1行目に広く取り、
   * 人数・傾斜・幹事・削除を2行目に並べる。
   */
  .wk-row-head {
    display: none;
  }
  .wk-row {
    grid-template-columns: 1fr 1fr 3.2em 2.2em;
    gap: 8px;
    padding: 12px 0;
  }
  .wk-cell-name {
    grid-column: 1 / -1;
  }
  .wk-inline-label {
    display: block;
  }
  .wk-cell-organizer {
    text-align: center;
  }
  .wk-collected {
    font-size: 2rem;
  }
  .wk-total-input {
    font-size: 1.75rem;
  }
}